Polyfluorene nanowires with pronounced axial texturing prepared by melt-assisted template wetting

Deirdre O' Carroll, Jennifer Irwin, David A. Tanner, Gareth Redmond

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Poly(9,9-dioctylfluorene) conjugated polymer nanowires were fabricated by melt-assisted wetting of porous anodic alumina templates. Analysis by high-resolution transmission electron microscopy and X-ray diffraction suggested that the polymer molecules were axially textured within the nanowires. Polarized optical microscopy images of single nanowires exhibited a pronounced optical birefringence consistent with internal axial alignment of the polymer molecules. Polarization-resolved photoluminescence images and spectra were acquired following near-field optical addressing of single nanowires. This data revealed that nanowire luminescence was markedly anisotropic with a preferred axial polarization of wire emission.

Original languageEnglish
Pages (from-to)298-302
Number of pages5
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume147
Issue number2-3
DOIs
Publication statusPublished - Feb 15 2008

Keywords

  • Birefringence
  • Conjugated polymers
  • Emission anisotropy
  • Nanowires
  • Polyfluorene

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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